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A synthesis of methane emissions from 71 northern, temperate, and subtropical wetlands.
Wetlands are the largest natural source of atmospheric methane. Here, we assess controls on methane flux using a database of approximately 19 000 instantaneous measurements from 71 wetland sitesExpand
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A three-year study of controls on methane emissions from two Michigan peatlands
We investigate temporal changes in methane emissions over a three-year period from two peatlands in Michigan. Mean daily fluxes ranged from 0.6–68.4 mg CH4 m−2d−1 in plant communities dominated byExpand
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A process-based model to derive methane emissions from natural wetlands
A process-based model has been developed in order to calculate methane emissions from natural wetlands as a function of the hydrologic and thermal conditions in the soil. The considered processes inExpand
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METHANE EFFLUX FROM EMERGENT VEGETATION IN PEATLANDS
1 Methane emissions from emergent plants in two peatlands were measured in plant enclosure experiments. During the summer growing season, methane emissions on a plant dry mass basis fromExpand
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The effects of spatial and temporal variations in acetate and sulfate on methane cycling in two Michigan peatlands
In this 3-yr study, we investigated temporal and spatial changes in pools of pore-water methane, sulfate, and acetate (a methanogenic substrate), along with corresponding methane fluxes. AcetateExpand
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Quantifying wetland methane emissions with process-based models of different complexities
Abstract. Bubbling is an important pathway of methane emissions from wetland ecosystems. However the concentration-based threshold function approach in current biogeochemistry models of methane isExpand
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Controls on methane production in a tidal freshwater estuary and a peatland: methane production via acetate fermentation and CO2 reduction
Rates of total methane production, acetate fermentation andCO2 reduction were compared for two different wetland sites. On aper-liter basis, sediments from the White Oak River estuary, a tidalExpand
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Climate change effects on carbon and nitrogen mineralization in peatlands through changes in soil quality
Climate change will directly affect carbon and nitrogen mineralization through changes in temperature and soil moisture, but it may also indirectly affect mineralization rates through changes in soilExpand
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Effect of seasonal changes in the pathways of methanogenesis on the δ13C values of pore water methane in a Michigan peatland
The δ13C value of pore water methane produced in a Michigan peatland varied by 11‰ during the year. This isotopic shift resulted from large seasonal changes in the pathways of methane production. OnExpand
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Paleoecological investigation of recent lake acidification in the Adirondack Mountains, N.Y.
Paleoecological analysis of the sediment record of 12 Adirondack lakes reveals that the 8 clearwater lakes with current pH < 5.5 and alkalinity < 10 μeq l-1 have acidified recently. The onset of thisExpand
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